Attached is one of the concert and fashion show I took at the Sea Festival held at our hometown last month. It was taken with my 20D, lens Canon EF 70-200mm f/2.8L USM with flash off, ISO was boosted to 800, Av mode. Yet, I doubt that this is the right shooting mode of concerts/shows photography since after having posted some photos at other websites, some criticized me that the white balance setting was wrong and so the skins of hte models did not look real. I would much appreciate it if you could advise me if I should have used my 580EX and if I had to which mode should it be set.

Thank you hackphotography very much for your advice. I feel right now for what I thought of about the stage lighting and will keep this faith without worrying anymore. I have visited your site where I found all music bands were taken excellently and professionally, esp the POV and composition.